Clock



FIG. 1 is a front elevational view of a clock showing my new design;

FIG. 2 is a right side elevational view thereof, the left side being amirror image thereto;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front perspective view thereof in a wall-hung position;

FIG. 7 is a right side elevational view of FIG. 6, the broken-lines of awall being environmental only and forming no part of the claimed design.

The ornamental design for a clock, substantially as shown and described.